136851345 has 24 divisors (see below), whose sum is σ = 243623016. Its totient is φ = 71013888.

The previous prime is 136851307. The next prime is 136851347. The reversal of 136851345 is 543158631.

136851345 is a `hidden beast` number, since 136 + 8 + 513 + 4 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 5588496 + 131262849 = 2364^2 + 11457^2 .

It is not a de Polignac number, because 136851345 - 2¹³ = 136843153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (136851347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 39432 + ... + 42761.

It is an arithmetic number, because the mean of its divisors is an integer number (10150959).

Almost surely, 2^136851345 is an apocalyptic number.

136851345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

136851345 is a deficient number, since it is larger than the sum of its proper divisors (106771671).

136851345 is a wasteful number, since it uses less digits than its factorization.

136851345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82241 (or 82238 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The square root of 136851345 is about 11698.3479602891. The cubic root of 136851345 is about 515.3271494124.

The spelling of 136851345 in words is "one hundred thirty-six million, eight hundred fifty-one thousand, three hundred forty-five".